scholarly journals How are Western water districts managing groundwater basins?

2018 ◽  
Vol 72 (1) ◽  
pp. 28-37 ◽  
Author(s):  
Claire Newman ◽  
Richard Howitt ◽  
Duncan MacEwan
Keyword(s):  
Water Districts ◽  
Groundwater Basins

scholarly journals Cost of groundwater protection: major groundwater basin protection zones in Poland

2021 ◽  
Author(s):  
Ewa Krogulec ◽  
Jacek Gurwin ◽  
Mirosław Wąsik
Keyword(s):  
Urban Areas ◽  
Groundwater Protection ◽  
Social Economy ◽  
Land Development ◽  
Cost Benefit ◽  
Legal Framework ◽  
Legal Analysis ◽  
Protection Zones ◽  
Groundwater Basins ◽  
The Cost

AbstractThis paper describes the complex hydrogeological, legal framework and socioeconomic costs of the groundwater protection in major groundwater basins (MGBs) in Poland in accordance with European directives. The hydrogeological criteria developed in Poland for establishing MGBs and the principles of their protection provide more details to the directives that are in force in Europe, which define the general principles for groundwater protection. The procedure of establishing MGB protection zones is connected with a change in local plans and land development and requires an analysis of the cost–benefit relationship in the sphere of social economy in the sector of public economics. The cost assessment was performed on the basis of data from hydrogeological documentations, and the aggregation of subareas to which the same existing and planned development can be attributed. A legal analysis of bans, orders and restrictions together with the identification of the risk of claims in specific hydrogeological and development conditions was a fundamental issue of research. These costs depend on the acreage and land use of the protected area. The unit costs of MGB protection, calculated per 1 km2 of the protection area, for six sample basins were estimated at €120 to €208,000/2 years/1 km2. The highest costs are generated by establishing protection in urban areas, while the lowest costs are generated in forest areas.

PROTECTION OF THE ENVIRONMENT AND ACCESS TO NATURAL RESOURCES, ESPECIALLY WATER

2021 ◽  
Vol 3 (4) ◽  
pp. 388-406
Author(s):  
Suheir Ibrahim Hachim NKHELA
Keyword(s):  
Natural Resources ◽  
Water Levels ◽  
Future Generations ◽  
International Treaties ◽  
Environmental Threats ◽  
Global Issue ◽  
The World ◽  
Long Time ◽  
Environmental Human Rights ◽  
Groundwater Basins

Environmental hazards are not considered a national problem that stops at the state’s borders only, but has become a regional and global issue that poses a direct threat to human survival all over the world as a whole. It requires the global community to provide environmental human rights and all the ingredients for sustainable development, especially clean air, clean fresh water, healthy food, and preserving natural resources for future generations. The water problem topped the list of environmental threats, as most countries of the world suffer from a severe shortage of water levels, diminishing the share of each person in the limited quantities of water, and today the world's countries and governments fear unending regional wars due to water, and the conflict over its sources, and the sources of rivers. Therefore, the issue of water has taken on a global character, and the complete conviction that water is the first problem that will face our future generations. he water war between the riparian states is a real war, and it will continue and happen inevitably. In the World Water Forum held in Istanbul in 2009, which showed that 260 water basins are shared by two or more countries, around which 40% of the world's population live, and there are hundreds of shared groundwater basins, for example there are fourteen countries that share a river The European Danube, eleven countries share each of the Nile and Niger rivers, nine countries share the Amazon River, and four countries share the Tigris and Euphrates, and the same is the Jordan River. Differences arose between the participating countries over the sources and the distribution of water between them for a long time, and sometimes reached the stage of acute conflicts and crises, and their intensity increased day after day. Dozens of international treaties have not resolved these differences, as disputes have not stopped after the conclusion of approximately 145 international treaties, and the reason for this is the absence of cooperation between these countries, the scarcity of rainwater, and the thinking of each country in isolation from the interests and peoples of other countries with which they share river water.

Self-validating deep learning of continental hydrology through satellite gravimetry and altimetry

2021 ◽  
Author(s):  
Christopher Irrgang ◽  
Jan Saynisch-Wagner ◽  
Robert Dill ◽  
Eva Boergens ◽  
Maik Thomas
Keyword(s):  
Neural Network ◽  
Satellite Altimetry ◽  
Water Cycle ◽  
Global Water Cycle ◽  
Network Training ◽  
The Neural Network ◽  
Continental Hydrology ◽  
Terrestrial Water ◽  
Combine Machine ◽  
Groundwater Basins

<p>Space-borne observations of terrestrial water storage (TWS) are an essential ingredient for understanding the Earth's global water cycle, its susceptibility to climate change, and for risk assessments of ecosystems, agriculture, and water management. However, the complex distribution of water masses in rivers, lakes, or groundwater basins remains elusive in coarse-resolution gravimetry observations. We combine machine learning, numerical modeling, and satellite altimetry to build and train a downscaling neural network that recovers simulated TWS from synthetic space-borne gravity observations. The neural network is designed to adapt and validate its training progress by considering independent satellite altimetry records. We show that the neural network can accurately derive TWS anomalies in 2019 after being trained over the years 2003 to 2018. Specifically for validated regions in the Amazonas, we highlight that the neural network can outperform the numerical hydrology model used in the network training.</p><p>https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL089258</p>

scholarly journals Causes and consequences of long-term groundwater overabstraction in Jordan

2021 ◽  
Author(s):  
Florian Brückner ◽  
Rebecca Bahls ◽  
Mohammad Alqadi ◽  
Falk Lindenmaier ◽  
Ibraheem Hamdan ◽  
...  
Keyword(s):  
Water Supply ◽  
Large Scale ◽  
Flow Direction ◽  
Groundwater Resources ◽  
Regional Scale ◽  
Irrigated Agriculture ◽  
Groundwater Levels ◽  
Contour Lines ◽  
Hydraulic Conditions ◽  
Groundwater Basins

AbstractIn 2017, a comprehensive review of groundwater resources in Jordan was carried out for the first time since 1995. The change in groundwater levels between 1995 and 2017 was found to be dramatic: large declines have been recorded all over the country, reaching more than 100 m in some areas. The most affected areas are those with large-scale groundwater-irrigated agriculture, but areas that are only used for public water supply are also affected. The decrease of groundwater levels and saturated thickness poses a growing threat for drinking water supply and the demand has to be met from increasingly deeper and more remote sources, causing higher costs for drilling and extraction. Groundwater-level contour lines show that groundwater flow direction has completely reversed in some parts of the main aquifer. Consequently, previously established conceptual models, such as the concept of 12 “groundwater basins” often used in Jordan should be revised or replaced. Additionally, hydraulic conditions are changing from confined to unconfined; this is most likely a major driver for geogenic pollution with heavy metals through leakage from the overlying bituminous aquitard. Three exemplary case studies are presented to illustrate and discuss the main causes for the decline of the water tables (agriculture and population growth) and to show how the results of this assessment can be used on a regional scale.

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